53 lines
1021 B
C
53 lines
1021 B
C
/*
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* QEMU Synchronous Serial Interface support
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*
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* Copyright (c) 2009 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licenced under the GNU GPL v2.
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*/
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#include "ssi.h"
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struct SSIBus {
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SSISlave *slave;
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};
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static void ssi_slave_init(DeviceState *dev, void *opaque)
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{
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SSISlaveInfo *info = opaque;
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SSISlave *s = SSI_SLAVE_FROM_QDEV(dev);
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SSIBus *bus = qdev_get_bus(dev);
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bus->slave = s;
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s->info = info;
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info->init(s);
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}
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void ssi_register_slave(const char *name, int size, SSISlaveInfo *info)
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{
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assert(size >= sizeof(SSISlave));
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qdev_register(name, size, ssi_slave_init, info);
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}
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DeviceState *ssi_create_slave(SSIBus *bus, const char *name)
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{
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DeviceState *dev;
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dev = qdev_create(bus, name);
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qdev_init(dev);
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return dev;
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}
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SSIBus *ssi_create_bus(void)
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{
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return qemu_mallocz(sizeof(SSIBus));
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}
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uint32_t ssi_transfer(SSIBus *bus, uint32_t val)
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{
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if (!bus->slave) {
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return 0;
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}
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return bus->slave->info->transfer(bus->slave, val);
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}
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